Sine angle plate



Aug. 24, 1948.

c. ADLER SINE ANGLE PLATE 2 Sheets-Sheet l Filed Jan. 31, 1945 jgyfl.

O C IIIIIHHIWO l o O Inventor Aug. 24, 1948. c. ADLER 2,447,889

S INE l ANGLE PLATE Filed Jan. '51, 1945 2 sheets-sheet' 2 v n/`7' /Z A ,4

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#Il e) m ev o "23 Inventor Patented Aug. 24,; 11948 v`UNITED STATES PATENT OFFICE fl SINE ANGLE PLATE can Adler, Wiekliffe, ohio Application January 31, 1945, Serial No. 575,402

s Claims. (C1. .a3-174) This invention relates to tool grinding and has for its object to provide means whereby accurate angles may be had in the grinding of tools.

Another object oi the invention is to provide an adjustable sine angle plate for checking the angle of tools being ground. Another object of the invention is to provide a combination angle gauge and tool holder.

A further object of the invention is yto provide an L-plate angle gauge and a sine plate base upon which the L-member may be held in inverted position together with means whereby the angular position of the plate may be adjusted.

Another object of the device is to provide an adjustable angle plate so formed that two setups are provided with each adjustment.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings in which:

Figure 1 is an elevational View of my sine angle plate,

Figure 2 is a side elevational view of the device shown in operating position and partly in section,

Figure 3 is a detail perspective view of a ground l roll,

Figure 4 is a side elevational view with two of the work locating plates removed, illustra-ting another operative position,

Figure 5 is a top plan View thereof, and

Figure 6 is a detail perspective view of adjusting elements.

In the accompanying drawings as above enumerated and in the following speciiication, like characters of reference indicate like parts throughout and in which: Ill indicates my sine angle plate which includes an angle plate I I, consisting of the right angularly connected plane plates I2 and I3, each having their free edges I4 and I5, out in to form right angular seats for accurately ground rolls I6 and Il, of equal dimensions, said rolls being provided with spaced bores I8 and I9, extending there-through to receive bolts 2B (shown dotted), whereby the rolls are held to their seats 2l and 212, the heads of said bolts being countersunk into the rolls.

Into a. horizontal base, or sine plate 23, is ixed an internally threaded tube 24, which projects through a bore 25, in said plate 23, the flange 26 of which tube is countersunk into the body of said plate. Threaded into the tube 24, is a screw bolt 27, terminating at its upper end in a ball head 28, seating in a socket 2'9, opening in the outer surface 30, of plate I 2, whereby the member Il, is secured in adjusted position to plate 23.

The head 28, is provided with a slot 3l, to receive a suitable tool for tightening or loosening the screw. Tapped bores 32, are provided along the edges '33, 34, in order that work locating stops or plates 3l', 3l, 39', 39, and 40 may be attached to the device when and where required to hold work, represented as a tool bit 36, in place on the sine angle plate.

In adjusting the device to obtain any desired angle, gauge blocks 4I, 42 and 43, may be seated under either of the rolls I6 or I'I, according to a particular adjustment required.

As shown in Figure 1, the member I'2 forms a sine angle plate or ordinary angle plate. It is also to be noted the set-up illustrated in Figure 2, is for grinding. For ordinary checking of angles it is only necessary to place gauge blocks in position for a desired angle without use of plate 23, and the locking members 24 and 21.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.

Having now described my invention that which I claim as new and desire to procure by Letters Patent is:

1. In a device of the kind described an L-shaped plate, the terminals of each end of which are provided with rabbeted seats, rolls Xedly mounted on each of said seats, a base plate upon which the L-shaped plate is mounted, one face of said L- shaped plate being formed with a countersunk opening therethrough, said base vplate being formed with a countersunk opening therethrough, adjustable means comprising a link having threaded telescopically associated parts engageable through said openings for fixing the plates together, gauge block means clamped between one of said rolls and said base plate, and work locating plates attachable to the sides and ends of the L-shaped plate, said L-shaped plate having tapped bores on the sides and ends to receive screws for attaching said plates.

2. In a device of the kind described an L- shaped plate, the terminals of each end of which are provided with rabbeted seats, rolls xedly mounted on each of said seats, a base plate upon which the L-shaped plate is mounted, one face of said L-shaped plate being formed with a countersunk opening therethrough, said base plate being formed with a countersunk opening therethrough, adjustable means comprising a link having threaded telescopically associated parts engageable through said openings for fixing the plates together, and gauge block means clamped between one of said rolls and said base plate.

3. In a device of the kind described an L-shaped plate, the terminals of each end of which are provided witbrahbetedfseats, rollsgxellyfmounted, 10

on each of-said seats, a base plate uponwhich the L-shaped plate is mounted, one face of said L- shaped plate being formed With a countersunleopening therethrough, said base plate,A being formed with a countersunk opening therethrough,

and adjustable means comprising a linlehaving,

4 REFERENCES CITED The following references are of record ln the le of this patent:

UNITED STATES PATENTS Number Name -Date 1,107,789 Hollandt et al Aug."18, 1914 1,551,995 Lovenston Sept. 1, 1,925

7 i S-luJ/er T:;::f:rz2r.Di.Qt19

FOREIGN PATENTS Number Country Date 59:1;014 France 1926 

